I believe it's official school name was "North Texas Female College" and it closed in 1935, but you can still find postcards from it on eBay for sale. A brief history of it's Sherman history: "The Sherman Male and Female High School, also known as the Sherman Male and Female Institute, began accepting students in 1866, making it one of three private schools registering students in Sherman. In 1873 the Sherman Male and Female High School became the North Texas Female College and offered primary, preparatory, and college education. In 1876 Austin College, a male college, relocated to Sherman from Huntsville.A public school system was established in 1883, and, along with Austin College, the North Texas Female College, and Mary Nash College, provided Sherman with a wealth of educational institutions. While Kidd-Key College (formerly the North Texas Female College) closed its doors in 1935, a number of private schools and colleges remained open."